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223 Posts
PJ,
my old SK 16’ with a 2 stroke 90hp was spinning a Mercury lazer II 20p prop to full rpm with ease, and was under propped if the boat was light. Considering the new LU has a 2.3:1 gear ratio it should spin something similar. I’d think a 17-19p three blade would be ballpark. Unless you are talking about something hard to turn like a heavy cup 4 blade with big blade area.
my old SK 16’ with a 2 stroke 90hp was spinning a Mercury lazer II 20p prop to full rpm with ease, and was under propped if the boat was light. Considering the new LU has a 2.3:1 gear ratio it should spin something similar. I’d think a 17-19p three blade would be ballpark. Unless you are talking about something hard to turn like a heavy cup 4 blade with big blade area.
